Improvement in leather-punching and cutting-machines



THDFEB 71871 Minus as:

EMERYV E. HARDY AND NAPOLEON DUBRULQOF JOLIET, ILLNOIS.,

Letters Patent No. 111,533, dated February 7,1871.

IMPROVEMENT IN LEATHER-PUNCHING AND CUTTING-MACHINES.

The Schedule referred to in these Letters Patent andmaking pari: of the same.

- EMERY E. HARDY and NAPOLEON DUBRUL, of" 1 Joliet, in the count-y of Will and State ol' Illinois, have invented a certain new and useful Machine for Bunching and Cutting Leather, of which the following is a full description, reference being had tothe accompanying drawing makinga part of this speciti, cation, in whichj Figure 1 is a perspective.

'Figure 2,

Figure 3,

Figure 4, anendfview.

Figure 5, a rear Vview of a part of the machine.

Figures 6 7 8, show the knives, the frame in which they are placed, and the mode of securing them -in place.

Figure 9 shows as et of creasing-rollers.

The object of our invention is to construct a machine hythe use of which holes can be rapidly punched in leather, and the leather be.cut in to strips of various widths, and which, by removing one set of rollers and inserting another, can he used as a creasing-machine.

Our machine is primarily designed to be used in manufacturing leather Aily-nets, for the purposes of cutting the straps and strings, and punching the holes in the straps, but it is not limited to these uses.

In the drawing- A represents the bed-plate, to which are rmly conuected`two supports B B', the same being connected at the top by a cross-bar, C, which is made hollow or open so as to admit a shaft for operating the eccentrics;

D 'and E guide-rollers, provided with grooves in which the knives m of the frame K are placed at the back;

D and E' guide and feed-rollers, by means of which the strips of leather are fed'to the punches;

1*", balance and crank-wheel;

G,.reciprocatiugshaft;

`VH, adjusting-frames for supporting the guide and feed-rollers E and E; r

I, a perforated adjustable plate for clearing the punches; j l

J, an extension of the journal of the roller E, so

that by the application of' a separate crank, the slitting portion of the machine is capable of a separate and independent movement;

K, a frame in which the slitting-knives are secured;

L,- a weighted lever for making the rollers D E selfadjusting; and

\V, a weight.

a represents a spur-wheel near the outer cud of the shaft, running through the cross-bar C;

b, a crank-wheel into which the wrist-pin of tne pitinan is inserted in a block sliding or adinsted in a slot, c, in said wheel or crank;

d, a ptrnan;

e, a vibrating arm pivoted on the journal oi' the roller D. This arm has a short branch, o, to the upper end of which a dog, t', is pvoted; v

' s, a spring to hold the dog down and insure its cngagement with the ratchet-wheel h 'f is a spur-wheel on the crank or main shaft g and j, spur-wheels ou the outer ends of the rollersD and E.

m, knives or blades for slitting leather into narrow strips.

u, an adjustable bed-plate to receive the punches when in operation.

1), slotwith thumb-screw for adjusting the hcight'of the clearing-plate I. y,

q, opening at the 4lower end of the reciprocatingshaft for the passage of chips.

r, connectingblock for the punches.

The machine is made oi' iron or of other suitable material. v

'lhe periphery ofthe short roller D' is milled, and the ends of Eare provided with angesso as to insure a proper direction and feed ot' the strap which is passing to the punches.

The punches are permanently attached to the headblock i', and when it is desired to change them the head-block is drawn out and another is inserted. In this way the number or sizes may be easily changed so as to adapt the machine to any kind of work requiring one or more holes punched at intervals. The punches are hollow, and the chips pass through the head-block lr and ont at the opening g.

The shaft G is made to operate by mez-.ns of a. piu

attached to the inner end ofthe cross-shaft operating in tlieJioi-izontal slot or opening k, iig. 3.

The punches lpass through the plate I, which is made adjustable to any thickness of leather, and it prevents the leather or other substance from rising when the punches are withdrawn, and as it is difficult tomake or keep the punches ot' an exact leugth'when two or more are nsed,'we make the bed-plate n adjustable, so that either end may be raised or lowered separately by means ot' the screwsu, and it may be raised and loweredas a whole to accommodate different lengths of punches, and to regulate the' exact distance for a proper cut. The gearing is arranged so as to regulate the ldistance between the-holes or series of holes in the strap, and also so as to leave the strap at rest while the punches pass through and are withdrawn.

The distance is regniatedby means of the slot c in the wheel b. When the wrist-pinjs at the inner end ot' the slot, the dog 't will engage each notch or tooth of the ratchet-wheel Ji., and when at the outer end, i will pass over and only engage every third' one, am will pass further if the wheel b is enlarged. It czn also be set at any intermediate point.

' The wheel b is .so arranged `with the pin inA slot it, that the-pnmche's pass through the leather whiie the dog z' is being withdrawn for a new operation, and in order to prevent anyreaction bf'the feed-rollers, we usually attach a spring-dog at the back of the wheel h, to hold it when it isleft'.v by the dog i.

When, cutting the strips and bands, the punch is not in operation, it is disconnected by turning ot the spring and throwing back tbe/,dog t', and if an addi- We, also provide a set of creasing-rollers, (shown at fig. 9,) to take the place of D and E, so that creasing 'can be done in the same machine.

l The'feed-roller E is provided with c'reaser's e3, so that when the straps are of a regular width, the creasing is done at the same time as the' punching. A

'The under frame His hinged, as shown at fig. 4, at one side, and is supported by the lever L. The outer end of this lever is Aprovided with a' snticient weight to make the roller E press against D hardenongh to do the requiredwork.' The journal-bearings ci E are in this frame H.

The frame K 'is made of iron, and has a long opening for the knives m. The knives or -blades are -spacedby means of intermediate blocks fw,` the same in width as' the space between the .grooves t in the feed-rollers, and they with the blades are heldin place by means of the screw x, which passes in at one end 'and presses against a washer, y, therebyspacing the blades correctly and holding them securelyin place,

but so that the blades can. be easily taken out for sharpening .and for other purposes.

The-blades passing in betweenY the rollers'in the 111,533 grooves t are supported above and below, 'in addition to the support of the frame K. VV-hen creasing-rollers only'\are used, this frame is taken out.

Having thus fully described our improved machine,

What we claim as new, and-desire to sccure by Letl pendently of each other, to adapt the bed-plate to the `.varying lengths of the different punches, substantially as described. y Y. v i i 4.v The combination of the intermittingly-moving feed-rollersD and E', with the reciprocating hollow punch l, stripping-plate I and bed-plate a, snbstan tially as described.

5. The combination of the grooved rolleisD and E, with t-he .knives m, secured in the frame K, one of said rollers being mounted in the yielding frame H, to

allow it to adapt itself to the different thicknesses of leather and bear with-uniform pressure thereon, substantiall'y asset forth. p

' '6. The arrangement of the punching devices and the slitting devices, withv their operating mechanism upon the sameframe, in such relation to'each other that both operations of punching and slitting may be performed simultaneously` substantially as set forth. EMERYE. HARDY.

` NAPOLEON DUBRUL.

Witnessesi WrW. S'rnvnns, J. H. HANsoN. 

